Why is California beach water not clear?

It's about what's in the water Along certain coasts, finer particles like sand and silt can add to the water's murkiness since they're easily agitated and stay afloat for long periods. On the other hand, the sediments off clearer coasts may be heavier and coarser.



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Scuba diving, remarkable beaches and whale watching abound, the coast of California is cherished by swimmers, divers and boaters alike. Catalina Island also has some of the most coveted beaches off the Southern Californian coast.

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The Weddell Sea has been claimed by scientists to have the clearest waters of any ocean in the world. Described by a historian as “the most wretched and dismal region on earth”, due to the flash freezes that caught Shackleton's ship, its clarity is only belied by the sheer depth of the ocean below.

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The Ocean Beach black sand is unlike the variety found on Hawaiian beaches as volcanic sand is not metallic. Ken Finn, the Exploratorium's science educator, explains that the Ocean Beach sand comes from the Sierra Nevada where igneous rocks are being worn down through erosion.

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But on that same beach, it's not uncommon to see kids shivering as they run out of the water, or a surfer wearing a partial wetsuit as they jog out for a session. California's ocean water is pretty cold, even in the summer, and it often catches visitors off-guard.

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Waterworks and our water wholesaler AVEK, are committed to efficiently managing our water resources to meet growing demands. Due to necessary adjustments in our operations, your tap water may contain a greater amount of air, resulting in a temporary milky or cloudy appearance.

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Malibu, Laguna, Crystal Cove, Doheny Beach, Carlsbad, and Pismo Beach are the cleanest beaches in California.

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